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aleksley [76]
3 years ago
7

Joe has finished 14 of the 30 lessons in his piano book. Lindsey has finished the same percent of lessons from her piano book, b

ut her book contains 45 lessons. How many lessons has Lindsey finished?
Mathematics
2 answers:
Ksenya-84 [330]3 years ago
8 0

Answer:

Step-by-step explanation:

14 is 46.67% of thirty so you’d need to find out what 46.67% of 45 is which would be 21

Hope this is right and it helped XD

AveGali [126]3 years ago
8 0

Answer:

Lessons has Lindsey finished = 21

Step-by-step explanation:

It is given that,

Joe has finished 14 of the 30 lessons in his piano book. Lindsey has finished the same percent of lessons from her piano book, but her book contains 45 lessons.

<u>To find the percentage of lessons of Joe</u>

Percentage = (14*100)/30 = 140*3 = 46.67%

<u>To find the lessons has Lindsey finished</u>

Lindsey has finished the  46.67% of lessons from her piano book

46.67% of 45 = (46.67*45)/100 = 2100/100 = 21

Therefore lessons has Lindsey finished = 21

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A lumber yard has five different lengths of 2 by 4 boards. Based on cost per linear foot, which is the best deal available on 2
ExtremeBDS [4]

Complete Question:

Here is the complete question:

<em>A lumber yard has five different lengths of 2 by 4 boards. Based on cost per linear foot, which is the best deal available on 2 by 4 boards at this lumber yard?</em>

<em>2 × 4 BOARD PRICES </em>

<em>8 foot board for $2.95 </em>

<em>10 foot board for $3.15 </em>

<em>12 foot board for $4.10 </em>

<em>16 foot board for $5.80 </em>

<em>20 foot board for $6.95</em>

Step-by-step explanation:

  • 8 foot board for $2.95

         \frac{2.95}{8}= 0.36875

  • 10 foot board for $3.15

        \:\frac{3.15}{10}=0.315

  • 12 foot board for $4.10

        \frac{4.1}{12}=0.341

  • 16 foot board for $5.80

        \frac{5.8}{16}= 0.3625

  • 20 foot board for $6.95

        \frac{6.95}{20}= 0.3475

Therefore, <em>10 foot board for $3.15</em><em>  </em>is the best deal available on 2 by 4 boards at this lumber yard. It means  you should be able to get 1 board for $0.315 when you buy 10 boards.

3 0
3 years ago
42.5% of what is 25.16
vagabundo [1.1K]
The answer to this question is 59.2, Hope this helps you 



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3 years ago
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Given points A (-5, 6) and B (7, -1), find: Distance, Midpoint, and Slope
a_sh-v [17]
We have that
<span>points A (-5, 6) and B (7, -1)

Part A)
find the distance
d=</span>√[(y2-y1)²+(x2-x1)²]-------> d=√[(-1-6)²+(7+5)²]----> d=√(49+144)
d=√193  units

Part B)
find the midpoint
ABx=(x1+x2)/2-----> (-5+7)/2-----> ABx=1
ABy=(y1+y2)/2-----> (-1+6)/2-----> ABy=2.5

the midpoint is (1,2.5)

Part C)
find the slope
m=(y2-y1)/(x2-x1)-----> m=(-1-6)/(7+5)--------> m=-7/12

the slope m=-7/12
4 0
3 years ago
Show work pls i need help
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This is the answers:
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21: 6.36/6
22: 6.24/6
23: 9.1/9
24: 4.6/5
25: 5.8/6
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3 years ago
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Alex777 [14]

Answer:

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Step-by-step explanation:

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